Pair of Ambrotype photographs of Carisbrooke Castle and Netley Abbey 1850's

Rare pair of Ambrotype photographs of Carisbrooke Castle and Netley Abbey around 1850's, as far as we could work out.In original unopened frames. Contemporary/original decoration round the edges of the photographs.
Size : 18cm x 18cm 
SN: 1530
Price: £850 the pair